Dcos(Ai,Bj)  otherwise,
.

where \(\beta \)  controls the weight of user-specified constraints relative to the unconstrained portion of the style loss, we use \(\beta =5\)  in all experiments. In the case of point-to-point constraints we find it useful to augment the constraints specified by the user with 8 additional point-to-point constraints, these are automatically generated and centered around the original to form a uniform 9x9 grid. The horizontal and vertical distance between each point in the grid is set to be 20 pixels for 512x512 outputs, but this is is a tunable parameter that could be incorporated into a user interface. For examples of region-to-region and point-to-point user control, see Figure  REF . Using one of the examples from  [1]}, which extended the algorithm of [2]} to allow region-to-region control, we demonstrate in Figure REF  that our proposed control mechanism performs similarly.
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